A protective box for a gas detector

Abstract

This utility model relates to the field of material testing or analysis technology, specifically to a protective box for a gas detector. The protective box includes a box body, which is cap-shaped and can be snapped onto the corresponding detection instrument from top to bottom. Two or more top support rods are provided on the box wall, with the inner end of each top support rod extending to the center of the box body. Each top support rod has a top block at its inner end. The top blocks of each top support rod press against the support of the detection instrument, thus clamping and fixing the box body to the support of the detection instrument. Each top support rod can be moved outwards to allow the top block to avoid obstructing the detection instrument when the box is snapped onto it. This utility model's protective box for the detection instrument is installed based on the instrument, thus solving the problem that existing protective boxes cannot protect the detection instrument in open environments where installation is impossible. Furthermore, if a special support bracket is used, the installation structure of the detection instrument itself needs to be changed, leading to increased modification costs.

Description

Technical Field

[0001] This utility model relates to the field of testing or analyzing materials, specifically to a protective box for a gas detector. Background Technology

[0002] In the production processes of various industries such as petrochemicals, various types of fixed gas detection instruments are used on-site. During operation, the sensors of these instruments must remain in constant contact with the ambient environment to enable real-time monitoring of gas concentrations. However, during on-site construction work, various tools can easily damage the instruments, or materials spilling from the site can contaminate them, especially hydrogen sulfide gas detectors. Because hydrogen sulfide gas is denser than air, hydrogen sulfide detectors are typically installed at low elevations, making them more susceptible to damage or contamination. Therefore, a protective device is needed that can effectively protect these instruments during on-site construction while maintaining contact between the sensor and the external gas environment, preventing contamination.

[0003] Chinese utility model patent specification CN211825936U, with authorization announcement date of October 30, 2020, discloses an environmental gas detection device for factories. The device includes a protective housing, in which a gas detector is installed. The protective housing is equipped with a forced air supply mechanism, which forces airflow in the environment through the path of the gas detector to detect the gas. For installation, a support plate is provided on the top of the protective housing, with two mounting holes and two support frames. In use, expansion bolts are inserted into the mounting holes to fix the support plate to a wall in the environment. The protective housing is then hung on the support frames using a support rod on the top of the protective housing.

[0004] The aforementioned protective enclosure can protect gas detectors. However, in the petrochemical industry, detection instruments are generally located low and lack suitable mounting structures. For example, the hydrogen sulfide detector mentioned above is mounted on the ground using a support pillar. The protective enclosure described in the patent specification requires a fixed foundation such as a wall in the environment for installation. In open environments, it cannot be installed and therefore cannot protect the detector. If a dedicated bracket is used, the mounting structure of the detector itself needs to be modified, which will increase the modification cost. Utility Model Content

[0005] The purpose of this utility model is to provide a protective box for a gas detector, so as to solve the problem that existing protective boxes cannot protect the detector in open environments because they cannot be installed. If a special bracket is set, the installation structure of the detector itself needs to be changed, which increases the modification cost.

[0006] To achieve the above objectives, the protective box for the gas detector of this utility model adopts the following technical solution:

[0007] A protective case for a gas detector includes a housing, which is a cap-shaped housing with an open bottom. The housing can be snapped onto a corresponding detection instrument from top to bottom. Two or more top support rods are provided on the housing wall. The inner end of each top support rod is located inside the housing and extends to the center of the housing. A top block is provided at the inner end of each top support rod. By pressing the top block of each top support rod against the support of the detection instrument, the housing can be clamped and fixed to the support of the detection instrument. Each top support rod can move outward so that the top block avoids the detection instrument when the housing is snapped onto the detection instrument.

[0008] Furthermore, the top support rods have different heights, so that at least two clamping openings are formed in the height direction by the top block.

[0009] Furthermore, the clamping directions of each clamp are different.

[0010] Furthermore, the clamping directions of at least two of the clamps are perpendicular to each other.

[0011] Furthermore, the top block is an arc-shaped top block to increase the contact area with the instrument bracket.

[0012] Furthermore, a horizontally swinging sleeve is provided at the mating position between the housing and the top support rod, and the top support rod is installed in the corresponding swing sleeve.

[0013] Furthermore, the top support rod is slidably fitted with the corresponding swing sleeve, and the swing sleeve is equipped with a set screw for fixing the corresponding top support rod.

[0014] Furthermore, a horizontal mounting plate is provided on the housing corresponding to the mounting position of the swing sleeve, and the swing sleeve is mounted on the mounting plate by a radially extending pin.

[0015] Furthermore, the box body is a polygonal box body, the top support rod is located on the edge of the polygonal box body, and the mounting plate is located on the inner side wall of the box body.

[0016] Furthermore, a gasket is provided on the side of the top block that is used to cooperate with the detector bracket.

[0017] Beneficial Effects: This utility model's protective box for gas detectors is a pioneering invention. Specifically, the protective box is designed as a hat-shaped box, with a top support rod on its wall. A top block at the inner end of the top support rod can avoid contact with the gas detector. In use, the box can be placed on the gas detector like a hat, and then the top support rod and top block clamp the detector's support, thus securing the box. This is completely different from existing technologies where the detector is mounted on a protective box. This utility model's protective box is mounted on a stand for an independent instrument, solving the problem that existing protective boxes cannot protect the detector in open environments, and that using a dedicated stand would require changing the detector's mounting structure, increasing modification costs. Attached Figure Description

[0018] Figure 1 This is an installation effect diagram (with perspective) of one embodiment of the gas detector protective box of this utility model;

[0019] Figure 2 yes Figure 1 Bottom view of the protective enclosure for the gas detector;

[0020] Figure 3 yes Figure 1 A cross-sectional view of the gas detector protective box at the position of the top support rod;

[0021] Figure 4 yes Figure 1 A top view of the protective enclosure for the gas detector;

[0022] Figure 5 This is a front view of the outer side of the area where the box body and the top support rod meet;

[0023] Figure 6 yes Figure 1 A schematic diagram of the structure of the box;

[0024] Figure 7 yes Figure 1 Front view of the protective enclosure for the gas detector in the image;

[0025] Figure 8 yes Figure 7 The left view.

[0026] In the diagram: 1. Box body; 2. Viewing window; 301. Upper top support rod; 302. Lower top support rod; 401. Upper swing sleeve; 402. Lower swing sleeve; 501. Upper pin; 502. Lower pin; 601. Upper set screw; 602. Lower set screw; 7. Pin seat; 801. Upper top block; 802. Lower top block; 901. Upper gasket; 902. Lower gasket; 10. U-shaped top plate; 11. U-shaped bottom plate; 12. Outer baffle; 13. Inner baffle; 14. Vertical strip outer channel; 15. Vertical strip inner channel; 16. Square hole; 17. Detector; 18. Detector bracket. Detailed Implementation

[0027] The features and performance of this utility model will be further described in detail below with reference to the embodiments.

[0028] The instrument protection box of this utility model is installed based on the instrument, which can solve the problem that existing protection boxes cannot protect the instrument in open environments because they cannot be installed. If a special bracket is set, the installation structure of the instrument itself needs to be changed, which increases the modification cost.

[0029] like Figure 1-8 As shown, the protective box for the gas detector of this utility model includes a protective part and a fixing part. The protective part is the box body 1, which is a five-sided rectangular three-dimensional structure. A transparent viewing window 2 is installed on the top edge, and the viewing window 2 extends to the upper part of the side facade. The upper part and top of the box body 1, except for the viewing window 2 area, are all sealed structures. The lower part of the box body 1 is composed of multiple vertical strip-shaped outer baffles 12. Vertical strip-shaped outer channels 14 are left between each outer baffle 12. Multiple vertical strip-shaped inner baffles 13 are installed on the inner perimeter of the outer baffles 12. Vertical strip-shaped inner channels 15 are also left between each inner baffle 13. The vertical strip-shaped outer channels 14 and vertical strip-shaped inner channels 15 are installed at a certain distance and in an alternating position. The top and bottom of the outer baffles 12 and the inner baffles 13 are connected by a U-shaped top plate 10 and a U-shaped bottom plate 11, respectively.

[0030] The above embodiments provide a preferred structure for the enclosure. However, those skilled in the art should understand that in other embodiments, the walls of the enclosure can also be a mesh structure, a louvered structure, etc., in which case the enclosure can be designed as a single-layer structure. In the above embodiments, the enclosure is ventilated by natural airflow, while in other embodiments, when conditions permit (e.g., the application scenario has a power supply), the enclosure can of course also be ventilated by forced air supply.

[0031] The fixed part mainly consists of four top support rods. These rods are divided into two opposing upper top support rods 301 and two symmetrically installed lower top support rods 302 below them. Square holes 16 are formed on the outer corner baffles 12 and inner corner baffles 13 of the housing 1, according to the height of the top support rods. Triangular mounting plates are horizontally installed above and below each square hole 16 on the inner corner baffle 13. These mounting plates form pin seats 7. Upper pins 501 and lower pins 502 are vertically installed on each pin seat 7. The upper and lower parts of each pin seat 7 are connected to the inner sides of each upper swing sleeve 401 and lower swing sleeve 402, respectively, allowing each swing sleeve to... It can swing horizontally around the pin as the axis. The upper support rod 301 and the lower support rod 302 can also be installed in the upper swing sleeve 401 and the lower swing sleeve 402 respectively, and can move axially along the upper swing sleeve 401 and the lower swing sleeve 402. The outer side of each upper swing sleeve 401 and the lower swing sleeve 402 is connected to the upper set screw 601 and the lower set screw 602. Each upper support rod 301 and the lower support rod 302 is vertically connected to the arc-shaped upper block 801 and the lower block 802 respectively inside the protective box. The outer side of each upper block 801 and the lower block 802 is connected to the upper gasket 901 and the lower gasket 902 respectively.

[0032] In the above embodiment, four top support rods are used, arranged in pairs. In other embodiments, the number of top support rods can be two, which, when placed opposite each other, can clamp the gas detector bracket. Alternatively, there can be three top support rods, distributed at 120° angles on the same plane. Furthermore, the number of top support rod layers can be three or more, which would correspondingly increase the number of top support rods.

[0033] The enclosure 1 is a rectangular pentahedron structure. Transparent viewing windows 2 are installed on the upper part and sides of the enclosure 1 to facilitate observation of the information on the detector panel installed at the bottom. The bottom of the enclosure 1 is a hollow structure.

[0034] The upper part of the box 1 is a single-layer structure, and the middle and lower parts of the box are double-layer structures, which are divided into an outer baffle 12 and an inner baffle 13. There are strip gaps between each baffle. The gaps between the outer baffle and the inner baffle are arranged alternately to ensure the normal flow of target gas in the environment and to prevent impurities such as sludge and sewage from coming into contact with the detector 17.

[0035] The outer sides of the upper top block 801 and the lower top block 802 are arc-shaped, which can match the cylindrical detector bracket 18 of the detection instrument, thereby increasing the contact area and preventing the box body 1 from deflecting horizontally after the protective box is installed.

[0036] The upper support rod 301 and the lower support rod 302 extend into the box body from the four corners of the box body 1, respectively. The two upper support rods 301 and the two lower support rods 302 are installed in relative positions. The upper support rods 301 and the lower support rods 302 are not at the same height in the horizontal direction. After the protective box is installed, this height difference can be used to straighten it and prevent the box body 1 from swaying from side to side.

[0037] The upper swing sleeve 401 and lower swing sleeve 402 can swing with the upper pin 501 and lower pin 502 as the axis respectively, and drive the upper top support rod 301 and lower top support rod 302 to swing in the horizontal direction respectively. The upper top support rod 301 and lower top support rod 302 can also move radially within the upper swing sleeve 401 and lower swing sleeve 402 respectively, so that the annular center formed by the upper top block 801 and lower top block 802 in the vertical direction can be adjusted inside the box 1.

[0038] In use, first pull out each upper support rod 301 and lower support rod 302 so that the center space of each upper support block 801 and lower support block 802 is larger than the size of the detector head 17. Lower the protective box from above the detector 17 until the panel of the detector 17 is flush with the viewing window 2. Push the two upper support rods 301 toward the center of the protective box. After the two upper support blocks 801 contact the detector bracket 18, tighten the upper screws 601. Then push the two lower support rods toward the center of the protective box. After the two lower top blocks 802 contact the detector bracket 18, tighten the lower top screws 602 respectively. When the detector 17 cannot be in the center position of the protective box due to the influence of the detector 17's incoming line or alarm and other accessories, the length of each top support rod can be adjusted, and each upper swing sleeve 401 and lower swing sleeve 402 can be swung so that when the detector bracket 18 is in different positions inside the protective box, the arc surfaces of each upper top block 801 and lower top block 802 can keep in contact with the outer wall of the detector bracket 18.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present utility model shall also be included within the protection scope of the present utility model.

Claims

1. A gas detector protection case, characterized in that, The device includes a housing, which is a cap-shaped housing with an open bottom. The housing can be snapped onto a corresponding testing instrument from top to bottom. Two or more top support rods are provided on the housing wall. The inner end of each top support rod is located inside the housing and extends to the center of the housing. A top block is provided at the inner end of each top support rod. By pressing the top block of each top support rod against the support of the testing instrument, the housing can be clamped and fixed to the support of the testing instrument. Each top support rod can move outward so that the top block avoids the testing instrument when the housing is snapped onto the testing instrument.

2. The gas detector protection case of claim 1, wherein, The top support rods are at different heights so that at least two clamps are formed in the height direction by the top block.

3. The gas detector protection case of claim 2, wherein, The clamping direction of each clamp is different.

4. The gas detector protection case of claim 3, wherein, The clamping directions of at least two of the clamps are perpendicular to each other.

5. A gas detector protection case according to any one of claims 1-4, characterized in that, The top block is an arc-shaped top block to increase the contact area with the instrument bracket.

6. A gas detector protection case according to any one of claims 1-4, characterized in that, A horizontally swinging sleeve is provided at the position where the box body and the top support rod cooperate, and the top support rod is installed in the corresponding swing sleeve.

7. The gas detector protection case of claim 6, wherein, The top support rod is slidably fitted with the corresponding swing sleeve, and the swing sleeve is equipped with a set screw to fix the corresponding top support rod.

8. The gas detector protection case of claim 6, wherein, A horizontal mounting plate is provided on the housing corresponding to the mounting position of the swing sleeve, and the swing sleeve is mounted on the mounting plate by a radially extending pin.

9. The gas detector protection case of claim 8, wherein, The box is a polygonal box, the top support rod is located on the edge of the polygonal box, and the mounting plate is located on the inner side wall of the box.

10. The gas detector protection case of any one of claims 1-4, wherein, A gasket is provided on the side of the top block that is used to cooperate with the detector bracket.

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